#import "RCCTabBarController.h"
#import "RCCViewController.h"
#import "RCTConvert.h"
#import "RCCManager.h"
#import "UIViewController+NavBarButtons.h"

@implementation RCCTabBarController

- (UIImage *)image:(UIImage*)image withColor:(UIColor *)color1
{
  UIGraphicsBeginImageContextWithOptions(image.size, NO, image.scale);
  CGContextRef context = UIGraphicsGetCurrentContext();
  CGContextTranslateCTM(context, 0, image.size.height);
  CGContextScaleCTM(context, 1.0, -1.0);
  CGContextSetBlendMode(context, kCGBlendModeNormal);
  CGRect rect = CGRectMake(0, 0, image.size.width, image.size.height);
  CGContextClipToMask(context, rect, image.CGImage);
  [color1 setFill];
  CGContextFillRect(context, rect);
  UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
  UIGraphicsEndImageContext();
  return newImage;
}

- (instancetype)initWithProps:(NSDictionary *)props children:(NSArray *)children globalProps:(NSDictionary*)globalProps bridge:(RCTBridge *)bridge
{
  self = [super init];
  if (!self) return nil;
  
  self.tabBar.translucent = YES; // default
  
  UIColor *buttonColor = nil;
  UIColor *selectedButtonColor = nil;
  NSDictionary *tabsStyle = props[@"style"];
  if (tabsStyle)
  {
    NSString *tabBarButtonColor = tabsStyle[@"tabBarButtonColor"];
    if (tabBarButtonColor)
    {
      UIColor *color = tabBarButtonColor != (id)[NSNull null] ? [RCTConvert UIColor:tabBarButtonColor] : nil;
      self.tabBar.tintColor = color;
      buttonColor = color;
      selectedButtonColor = color;
    }
    
    NSString *tabBarSelectedButtonColor = tabsStyle[@"tabBarSelectedButtonColor"];
    if (tabBarSelectedButtonColor)
    {
      UIColor *color = tabBarSelectedButtonColor != (id)[NSNull null] ? [RCTConvert UIColor:tabBarSelectedButtonColor] : nil;
      self.tabBar.tintColor = color;
      selectedButtonColor = color;
    }
    
    NSString *tabBarBackgroundColor = tabsStyle[@"tabBarBackgroundColor"];
    if (tabBarBackgroundColor)
    {
      UIColor *color = tabBarBackgroundColor != (id)[NSNull null] ? [RCTConvert UIColor:tabBarBackgroundColor] : nil;
      self.tabBar.barTintColor = color;
    }
    
    BOOL tabBarHidden = [tabsStyle[@"tabBarHidden"] boolValue];
    if (tabBarHidden){
      self.tabBar.hidden = true;
    }
  }
  
  NSMutableArray *viewControllers = [NSMutableArray array];
  
  // go over all the tab bar items
  for (NSDictionary *tabItemLayout in children)
  {
    // make sure the layout is valid
    if (![tabItemLayout[@"type"] isEqualToString:@"TabBarControllerIOS.Item"]) continue;
    if (!tabItemLayout[@"props"]) continue;
    
    // get the view controller inside
    if (!tabItemLayout[@"children"]) continue;
    if (![tabItemLayout[@"children"] isKindOfClass:[NSArray class]]) continue;
    if ([tabItemLayout[@"children"] count] < 1) continue;
    NSDictionary *childLayout = tabItemLayout[@"children"][0];
    UIViewController *viewController = [RCCViewController controllerWithLayout:childLayout globalProps:globalProps bridge:bridge];
    if (!viewController) continue;
    
    // create the tab icon and title
    NSString *title = tabItemLayout[@"props"][@"title"];
    UIImage *iconImage = nil;
    id icon = tabItemLayout[@"props"][@"icon"];
    if (icon)
    {
      iconImage = [RCTConvert UIImage:icon];
      if (buttonColor)
      {
        iconImage = [[self image:iconImage withColor:buttonColor] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
      }
    }
    UIImage *iconImageSelected = nil;
    id selectedIcon = tabItemLayout[@"props"][@"selectedIcon"];
    if (selectedIcon) iconImageSelected = [RCTConvert UIImage:selectedIcon];
    
    viewController.tabBarItem = [[UITabBarItem alloc] initWithTitle:title image:iconImage tag:0];
    viewController.tabBarItem.accessibilityIdentifier = tabItemLayout[@"props"][@"testID"];
    viewController.tabBarItem.selectedImage = iconImageSelected;
    
    if (buttonColor)
    {
      [viewController.tabBarItem setTitleTextAttributes:
       @{NSForegroundColorAttributeName : buttonColor} forState:UIControlStateNormal];
    }
    
    if (selectedButtonColor)
    {
      [viewController.tabBarItem setTitleTextAttributes:
       @{NSForegroundColorAttributeName : selectedButtonColor} forState:UIControlStateSelected];
    }
    
    // create badge
    NSObject *badge = tabItemLayout[@"props"][@"badge"];
    if (badge == nil || [badge isEqual:[NSNull null]])
    {
      viewController.tabBarItem.badgeValue = nil;
    }
    else
    {
      viewController.tabBarItem.badgeValue = [NSString stringWithFormat:@"%@", badge];
    }
    
    [viewControllers addObject:viewController];
  }
  
  // replace the tabs
  self.viewControllers = viewControllers;
  [self setParentStyle:tabsStyle];
  
  return self;
}

- (void)performAction:(NSString*)performAction actionParams:(NSDictionary*)actionParams bridge:(RCTBridge *)bridge completion:(void (^)(void))completion
{
  if ([performAction isEqualToString:@"setBadge"])
  {
    UIViewController *viewController = nil;
    NSNumber *tabIndex = actionParams[@"tabIndex"];
    if (tabIndex)
    {
      int i = (int)[tabIndex integerValue];
      
      if ([self.viewControllers count] > i)
      {
        viewController = [self.viewControllers objectAtIndex:i];
      }
    }
    NSString *contentId = actionParams[@"contentId"];
    NSString *contentType = actionParams[@"contentType"];
    if (contentId && contentType)
    {
      viewController = [[RCCManager sharedInstance] getControllerWithId:contentId componentType:contentType];
    }
    
    if (viewController)
    {
      NSObject *badge = actionParams[@"badge"];
      
      if (badge == nil || [badge isEqual:[NSNull null]])
      {
        viewController.tabBarItem.badgeValue = nil;
      }
      else
      {
        viewController.tabBarItem.badgeValue = [NSString stringWithFormat:@"%@", badge];
      }
    }
  }
  
  if ([performAction isEqualToString:@"switchTo"])
  {
    UIViewController *viewController = nil;
    NSNumber *tabIndex = actionParams[@"tabIndex"];
    if (tabIndex)
    {
      int i = (int)[tabIndex integerValue];
      
      if ([self.viewControllers count] > i)
      {
        viewController = [self.viewControllers objectAtIndex:i];
      }
    }
    NSString *contentId = actionParams[@"contentId"];
    NSString *contentType = actionParams[@"contentType"];
    if (contentId && contentType)
    {
      viewController = [[RCCManager sharedInstance] getControllerWithId:contentId componentType:contentType];
    }
    
    if (viewController)
    {
      [self setSelectedViewController:viewController];
    }
  }
  
  if ([performAction isEqualToString:@"setStyle"]){
    [self setParentStyle:actionParams];
  }
  
  if ([performAction isEqualToString:@"refresh"]){
    [self setProps:actionParams];
  }
  
  // setButtons
  if ([performAction isEqualToString:@"setButtons"])
  {
    NSArray *buttons = actionParams[@"buttons"];
    BOOL animated = actionParams[@"animated"] ? [actionParams[@"animated"] boolValue] : YES;
    NSString *side = actionParams[@"side"] ? actionParams[@"side"] : @"left";
    
    [self setButtons:buttons side:side animated:animated];
    return;
  }
  
  if ([performAction isEqualToString:@"setTabBarHidden"])
  {
    BOOL hidden = [actionParams[@"hidden"] boolValue];
    [UIView animateWithDuration: ([actionParams[@"animated"] boolValue] ? 0.45 : 0)
                          delay: 0
         usingSpringWithDamping: 0.75
          initialSpringVelocity: 0
                        options: (hidden ? UIViewAnimationOptionCurveEaseIn : UIViewAnimationOptionCurveEaseOut)
                     animations:^()
     {
       self.tabBar.transform = hidden ? CGAffineTransformMakeTranslation(0, self.tabBar.frame.size.height) : CGAffineTransformIdentity;
     }
                     completion:^(BOOL finished)
     {
       if (completion != nil)
       {
         completion();
       }
     }];
    return;
  }
  else if (completion != nil)
  {
    completion();
  }
}


- (void)viewWillLayoutSubviews
{
  if (self.tabBar.hidden){
    CGRect tabFrame = self.tabBar.frame; //self.TabBar is IBOutlet of your TabBar
    tabFrame.size.height = 0;
    tabFrame.origin.y = self.view.frame.size.height;
    self.tabBar.frame = tabFrame;
  }
}

@end